Device for loosening a window sash from the frame



July 18, 1967 E. H. PRIMOFF 3,331,586

DEVICE FOR LOOSENING A WINDOW SASH FROM THE FRAME Filed Oct. 20, 1965 I N VEN TOR. fUGE/Vf /7 fiP/nmff ATTOEA/EKS United States Patent ABSTRACT OF THE DISCLOSURE A window sash loosener having a pair of pivotally interconnected bars which when placed in longitudinal alignment between a sash and a sill of the frame are effective to loosen the sash.

The present invention relates to pushing devices and, more particularly, to an improved device for loosening a window sash from its frame.

Heretofore, devices have been proposed for opening or closing windows which were stuck in their frames due to various causes. However, such devices were unduly complicated and hence were too expensive to entice the home owner or apartment dweller to purchase the same for infrequent needs of use.

Accordingly, an object of the present invention is to provide an improved device of the foregoing type which is simple and so inexpensive that there is no sales resistance due to the price thereof.

Another object is to provide such a device which is readily fabricated and assembled.

A further object is to provide such a device which can be used for raising or lowering the upper or lower sash and can be constructed to work on wooden or metallic sashes and frames.

Other and further objects will be obvious upon an understanding of the illustrative embodiment about to be described, or will be indicated in the appended claims, and various advantages not referred to herein will occur to one skilled in the art upon employment of the invention in practice.

In the drawing:

FIG. 1 is a perspective view of a device in accordance with the present invention;

FIG. 2 is a vertical sectional view taken through the frame and the sashes of a window illustrating the device in one position of use, preparatory to opening the window;

FIG. 3 is a view similar to FIG. 2 illustrating the device in another position of use, after the window has been raised;

FIG. 4 is an enlarged fragmentary perspective view of one end of the device illustrating an arrangement which enables the device to be used on wooden and metallic sashes.

Referring now to FIG. 1 of the drawing in detail, there is shown a device which comprises a first bar having a lower end 11 for engaging a cross-piece of a window sash or the sill or the lintel of a Window frame and having an aperture 12 between its ends preferably located closer to its upper end than its lower end, a pin 14 secured in the aperture 12, and a second bar 15 having an upper end 16 for engaging a cross-piece of the sash or the sill or lintel of the window frame and having aperture means 17 along the length thereof for releasably receiving the pin 14 at.d.ifierent locations along the length of the bar 15 to pivotally connect the bars 10 and 15 and to vary the combined length of the bars. The bars are constructed of wood, metal or reinforced plastic.

7 In the illustrative embodiment, the aperture means 17 constitutes a row of a plurality of spaced apertures 18.

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It is of course understood that a apertures 12 may be placed in bar 10, as well, so as to afford greater flexibility in opening windows.

The engaging ends 11 and 16 of the bars 10 and 15, respectively, are each provided with a cushioning element, such as a rubber pad 19, adhesively secured to the ends of the bars, for preventing the device from marring the paint or the wood of the sash, sill or lintel.

In operation, as shown in FIGS. 2 and 3, the pin 14 is inserted into an aperture 18 so that, when the bars 10 and 15 are brought into longitudinal alignment, the combined length of the bars is greater than the distance between a cross-piece of a sash and the sill or lintel of the frame; the upper end 16 of the bar 15 is placed underneath the upper cross-piece CP of the lower sash; the lower end 11 of the bar 10 is placed on the sill S with the bar at an obtuse angle of about (FIG. 2); and the device is pushed toward the window as indicated by the arrow by bringing the bars into longitudinal alignment (FIG. 3) whereby a force is exerted to raise the sash.

In the event the sash is still stuck, the bars 10 and 15 are taken apart and the pin 14 is inserted into an aperture 18 below the one previously used to increase the combined length of the bars; and the device is used again to further raise the sash. These operations are repeated until the sash is freed or raised to a desired position.

Alternatively, the device could be placed between the lintel and the upper cross-piece of the lower sash to lower the same; the device could be placed between the lintel and the lower cross-piece of the upper sash to lower the same; or the device could be placed between the upper cross-pieces of the sashes to raise the upper sash.

The device can be applied at any point along the width of the cross-pieces, the sill or the lintel; and may be applied at several of such points without changing the aperture setting to jockey a stubborn sash.

In FIG. 4, an arrangement is shown which enables the device to be used on both wooden and metallic windows. This arrangement includes the pad 19 already described for use in wood, and a metallic plate 20 for use on windows, usually metallic, having narrow ledges in its top rails.

The plate 20 as shown is generally triangular, and is pivotally mounted at one side of a bar 10 or 15 by a pin 21 and can be positioned (as shown in full lines), so that its lower edge 22 rests on a fixed stud 24 extending outwardly of the bar and so that its upper edge 25 extends upwardly above the pad 19 to engage the top rail of the window sash having a narrow ledge. When the device is to be used on a Wooden window, the plate 20 is swung under the stud 24, as shown in broken lines, to expose the pad and render the plate inactive. If desired, the upper and lower edges of the plate may each be formed with a recess 26 for receiving the stud 24.

From the foregoing description, it will be seen that the present invention provides a simple, practical and reliable device for loosening window sashes from their frame.

As various changes may be made in the form, construction, and arrangement of the parts herein, without departing from the spirit and scope of the invention and without sacrificing any of its advantages, it is to be understood that all matters are to be interpreted as illustrative and not in any limiting sense.

What is claimed is:

1. A device for loosening a window sash from its frame which device comprises a first bar having an end for engaging a cross-piece of the sash or the sill or the lintel of the frame and having an aperture between its plurality of spaced ends, a pin in said aperture, a second bar having an end for engaging a cross-piece of the sash or the sill or the lintel of the frame and having aperture means along the length thereof for receiving said pin at difierent locations along the length thereof to pivotally connect said bars and to vary the combined length of said bars, a rigid plate pivotally mounted on a side of one of said bars near its end and a stud secured to said one bar which stud is engaged by a first edge of said plate to position a second edge of said plate above a top edge of said one bar.

2. A device according to claim 1, wherein a cushioning element is secured to the top edge of said one bar which element is rendered inactive when said plate extends above it and which element is exposed by positioning said plate so that said second edge is below said top edge of said one bar.

References Cited UNITED STATES PATENTS 240,437 4/1881 McDermott 254123 1,077,906 11/1913 Doolittle et a1. 254-123 1,281,936 10/1918 French 25412 3 2,766,008 10/1956 Hurd 254-129 OTHELL M. SIMPSON, Primary Examiner. 

1. A DEVICE FOR LOOSENING A WINDOW SASH FROM ITS FRAME WHICH DEVICE COMPRISES A FIRST BAR HAVING AN END FOR ENGAGING A CROSS-PIECE OF THE SASH OR THE SILL OR THE LINTEL OF THE FRAME AND HAVING AN APERTURE BETWEEN ITS ENDS, A PIN IN SAID APERTURE, A SECOND BAR HAVING AN END FOR ENGAGING A CROSS-PIECE OF THE SASH OR THE SILL OR THE LINTEL OF THE FRAME AND HAVING APERTURE MEANS ALONG THE LENGTH THEREOF FOR RECEIVING SAID PIN AT DIFFERENT LOCATIONS ALONG THE LENGTH THEREOF TO PIVOTALLY CONNECT SAID BARS AND TO VARY THE COMBINED LENGTH OF SAID BARS, A RIGID PLATE PIVOTALLY MOUNTED ON A SIDE OF ONE OF SAID BARS NEAR ITS END AND A STUD SECURED TO SAID ONE BAR WHICH STUD IS ENGAGED BY A FIRST EDGE OF SAID PLATE TO POSITION A SECOND EDGE OF SAID PLATE ABOVE A TOP EDGE OF SAID ONE BAR. 